Draft-controlling device



July 110, 1923.

Y J. ELICK DRAFT CONTROLLING DEVICE Filed Sept. 21 1921 I N VEN TOR.

A TTORNEY.

zaz/ Patented July 10, 1923.

DRAFT-CONTROLLING DEVICE.

Jam: Enron, or oEN'rnALIA, WASHINGTON. 1

Application filed Se tember 21, 1921. Serial No. 502,208.

T 0 all whom it may concern:

Be it known that 1, JOHN Enron, a citizen of the United States, residing at Centralia, in the county ofLewis and State of Nashington, have invented certain new and useful Improvements in Draft-Controlling Devices, of which the following is a specification.

This invention relates to draft controller devices for boilers, and has for one of its objects to simplify and improve the construction and increase the efliciency and utility of devices of this character.

Another object of the invention is to provide a device of this character which may be applied to boilers already in use Without material structural change either in the boiler or in the attachment.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown'and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention;

Figure 1 is a side elevation, partly in sec-' tion, of a conventional locomotive boiler with the improvement applied.

Figure 2 is a sectional detail of a portion of the parts shown in Fig. 1, illustrating the construction.

Figure 8 is atransverse section enlarged,

on the line 33 of Fig. 1.

The improved devices are more particularly adapted to be installed in the smoke box portions of locomotive boilers, and for the purpose of illustration are thus shown. The shell of the boiler is indicated at 10, the engineers cab at 11, the smoke box portion at 12, the forward flue sheet at 13, the fines at 14, the smoke stack at 15, and the exhaust nozzle at 16, the latter being in vertical alinement with the smoke stack, these parts being of the usual construction.

The improved attachment includes a diaphragm formed of an upper short horizontal portion attached to the forward flue sheet 13 above the flues, a lower horizontal portion 18 apertured to receive the exhaust nozzle 16, and an inclined intermediate portion 17 connecting the horizontal portions.

The diaphragm as usually constructed and employed in locomotive smoke boxes, while accomplishing much in the Way of catching the heavier particles of unconsumed fuel, is not sufficient to accomplish all of the desired results, withcertain kinds'of fuel, and the improvement which is the subject matter of the present application is designed to supplement the action-of the diaphragm.

The improvement includes a shaft or heavy rod 19 extending between the walls of the smoke box and having bearings 20 to rotatively support the rod.

Attached to the rod 19 and extending continuously between the sides of the smoke box, is a plate 22 directed at its lower edge toward the bottom of the smoke box, the member 22 serving as a deflector in coaction with the diaphragm 1718. The shaft or rod 19 is located above the line of the lower horizontal portion 18 of the diaphragm so that the plate 22 bears against the forward edge of the latter, and is thereby limited in its movement in one direction.

At one, end the rod 19 is extended to receive an operating arm 21 to which an operating rod 22 is coupled, the latter leading into the cab 11 and provided with means, such as a lever 23, toothed segment 24: and pawl device 25, for adjusting the deflector to any desired angle and holding it in adjusted position.

The deflector member 22 can thus be actuated from the cab 11, to control the amount of the deflection, and consequently control the force of the draft.

Disposed within the smoke stack 15 are a plurality of reversely inclined baflie members 26, certain of the baffle members having their inner portions curved upwardly as shown at 27 to facilitate the passage of the products of the combustion through the stack.

By this arrangement as the smoke and cinders pass through the flues they are deflected and retarded by the diaphragm 17-18 and directed toward the bottom of the smoke box, where the heavier particles of unconsumed cinders settle and the lighter particles of the cinders and smoke only pass to the stack.

It will be noted that the deflector extends entirely across the smoke box and receives the products of the combustion from all of the flues uniformly.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that modifications within the scope ofthe claim may be made in the construction without departing from the principle of theinvention or sacrificing any of its tages 1. .v

Having thus described the invention what is claimed as new is An attachment for steam generators including a smoke box, the forward flue sheet,

the fines, and an exhaustpipe, comprising" a diaphragm formed of upper and lower horizontal portionsextending in iarallel reat n anda p r qn dir ct ataniang e Z b th dl it di 'l- Planes. f h ho zon a 'portions, the upgiierhoriz ontal portion adapted to engage. the fine sheet'above the'fiues and the lower horizontal portion apertured ti e'c ve t e e hau ipw S 1 i g rod extending transversely of the sine e box and above the line of the lower horizontal portion of thedia'phra'gm, and a controlling elemerit ,rotative with the rod and bearing againstthe forward edge of the diaphragm when in lower position and limited in its movement in one'direotion thereby,

In testimony whereof, I aifixmy signature hereto. 7 1 V 4 romr m 

